Time Measurement, Special Relativity & Time Fractional Formalism from Administrator's blog

Special Theory of Relativity without Imaginary X4 = ict Coordinate (by Amrit S. Sorli): With introduction of imaginary time coordinate X4=ict the question has raised whether this coordinate has a real physical existence or it is only a mathematical tool. In this paper it is shown that Special Theory of Relativity can be described without the imaginary coordinate X4 within a three dimensional Euclid space, where time t which we measure with clocks is a numerical sequence of motion, i.e., a material change within a three dimensional physical space.

Time Fractional Formalism: Classical and Quantum Phenomena (by Hosein Nasrolahpour): In this review, we present some fundamental classical and quantum phenomena in view of time fractional formalism. Time fractional formalism is a very useful tool in describing systems with memory and delay. We hope that this study can provide a deeper understanding of the physical interpretations of fractional derivative.